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VFD190 Series Variable Priority Flow Dividers VFD190RD250S3 SINGLE PACK | TSK6434-142

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Description & Features

The WEBTEC VFD190 Series Variable Priority Flow Dividers are engineered for precise control of hydraulic actuator speeds, offering a flexible flow range from 0 to 95 L/min (0 to 25 US gpm). Designed to withstand demanding environments, these flow dividers operate at maximum pressures of 420 bar (6000 psi) and are compatible with mineral oils conforming to ISO 11158 standards. Constructed with robust steel components housed in a durable, black-painted ductile iron body, the VFD190RD250S3 model features a user-friendly aluminum knob for easy adjustments. With a temperature resilience spanning from -30 to 120 °C (-22 to 248 °F) for fluids and -30 to 50 °C (-22 to 122 °F) in ambient conditions, these dividers ensure reliable performance under varying conditions. The porting is standardized with a 1-5/16" -12UN #16 SAE ORB connection, ensuring seamless integration into existing systems.

SKU: TSK6434-142
Supplier Part Number (MPN): VFD190RD250S3

Specifications

Brand
WEBTEC
Brand
Webtec
Pack Size
1.00
UOM
EA
Supplier Part Number
TSK6434-142
Ambient Temperature
-30 to 50 °C, -22 to 122 °F
Body Materials
Steel components in cast Ductile Iron body painted black Aluminium knob
Compatible Fluid
Mineral oils to ISO 11158
Flow Range (US gpm)
0 - 25
Flow Range (L/min)
0 - 95
Fluid Temperature Range
-30 to 120 °C, -22 to 248 °F
Gross Weight
3.75 kg, 8.3 lbs
Internal Materials
Steel components
Maximum Rated Flow
95 L/min, 25 US gpm
Max Rated Pressure
420 bar, 6000 psi
Net Weight
3.75 kg, 8.3 lbs
Porting
1-5/16” -12UN #16 SAE ORB
Seals
NBR / PTFE
Product Weight
0.99 lbs

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Product Questions & Answers (2)

Question by: Kent P on Jan 11, 2026, 3:32 PM
Can this flow divider handle high pressure in a hydraulic system?
Answer by: Customer Support on Jan 13, 2026, 8:52 AM
The VFD190 Series Variable Priority Flow Divider, model VFD190RD250S3, can definitely manage high-pressure situations. It’s built to withstand a maximum pressure of 420 bar or 6000 psi, making it suitable for demanding hydraulic applications.
Question by: Brent W on Sep 1, 2025, 7:52 PM
seals are NBR and PTFE on this one -- how's that hold up with standard mineral oil hydraulic fluid over time?
Answer by: Customer Support on Sep 3, 2025, 7:21 AM
NBR and PTFE are a solid combination for mineral oil service. NBR handles the bulk of the sealing work and stands up well to petroleum-based fluids, while PTFE brings chemical resistance and low friction to the mix. As long as you're running mineral oils that meet ISO 11158, you're in good shape. The fluid temperature range goes from -30 all the way up to 120 degrees C, so normal operating temps in most hydraulic circuits won't stress the seals at all.